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Every term in an archetype can be 'bound' to a terminology to better understand the authors intent. Further, archetypes allow expression of subsets to determine which terms are appropriate values at a given data point. This is called a 'constraint definition' and is really a placeholder for a valueset that is offered to the user within the application.
Terminologies used in Healthcare include ICD-10 (and its predecessor ICD-9), SNOMED-CT, LOINC and many others.
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